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Formula: Pb
Form: Bar
Material: Lead
CAS Number: 7439-92-1
Commodity: Metals
Purity:
99.999%
Side Length:
20mm
Side Length (Of Longer Side):
40mm
Hazard Pictogram:
GHS08
Goodfellow’s Lead Bar has a unique semicircular cross-section and rounded ends. With its exceptional purity of up to 99.999%, it’s perfect for applications requiring high precision and reliability. Lead is a soft, silvery white or grayish metal, that’s very malleable, ductile and dense. It is also a poor conductor of electricity while being highly resistant to corrosion. These properties make it good for radiation shielding, as well as for vibration dampening and other applications.
Serious health hazard
Tolerances
Bar
| Side Length | =<10mm | ±10% |
|---|---|---|
| Side Length | >10mm | ±1mm |
| Side Length (Of Longer Side) | >10mm | ±1mm |
| Side Length (Of Longer Side) | =<10mm | ±10% |
| Length | <100mm | ±1mm |
| Length | >=100mm | +5% / -1% |
Material Properties for Metals
Atomic Properties
| Element | Value |
|---|---|
| Atomic number | 82 |
| Crystal structure | Face centred cubic |
| Electronic structure | Xe 4f¹⁴ 5d¹⁰ 6s² 6p² |
| Valences shown | 2, 4 |
| Atomic weight( amu ) | 207.2 |
| Thermal neutron absorption cross-section( Barns ) | 0.18 |
| Photo-electric work function( eV ) | 4 |
| Natural isotope distribution( Mass No./% ) | 207/ 22.1 |
| Natural isotope distribution( Mass No./% ) | 208/ 52.4 |
| Natural isotope distribution( Mass No./% ) | 206/ 24.1 |
| Natural isotope distribution( Mass No./% ) | 204/ 1.4 |
| Atomic radius - Goldschmidt( nm ) | 0.175 |
| Ionisation potential( No./eV ) | 5/ 68.8 |
| Ionisation potential( No./eV ) | 3/ 31.9 |
| Ionisation potential( No./eV ) | 4/ 42.3 |
| Ionisation potential( No./eV ) | 2/ 15.03 |
| Ionisation potential( No./eV ) | 1/ 7.42 |
Mechanical Properties
| Element | Value |
|---|---|
| Hardness - Mohs | 1.5 |
| Material condition | Polycrystalline |
| Material condition | Sand cast |
| Poisson's ratio | 0.44 |
| Poisson's ratio | 0.44 |
| Bulk modulus( GPa ) | 45.8 |
| Bulk modulus( GPa ) | 45.8 |
| Tensile modulus( GPa ) | 16.1 |
| Tensile modulus( GPa ) | 16.1 |
| Tensile strength( MPa ) | 12 |
| Yield strength( MPa ) | 5.5 |
Electrical Properties
| Element | Value |
|---|---|
| Electrical resistivity( µOhmcm ) | 20.6@20@20°C |
| Superconductivity critical temperature( K ) | 7.196 |
| Temperature coefficient( K⁻¹ ) | 0.0042@0-100°C |
| Thermal emf against Pt (cold 0C - hot 100C)( mV ) | 0.44 |
Physical Properties
| Element | Value |
|---|---|
| Boiling point( C ) | 1740 |
| Density( gcm⁻³ ) | 11.35@20 |
Thermal Properties
| Element | Value |
|---|---|
| Melting point( C ) | 327.5 |
| Latent heat of evaporation( J g⁻¹ ) | 862 |
| Latent heat of fusion( J g⁻¹ ) | 23.2 |
| Specific heat( J K⁻¹ kg⁻¹ ) | 159@25°C |
| Thermal conductivity( W m⁻¹ K⁻¹ ) | 35.3@0-100°C |
| Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) | 29@0-100°C |
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